Improvement in iron doors



LEwI'sII-OVER, vOr CHICAGO, ILLINOIS. Leim Putative. 83,062, camz october 13, 186s.

To all whom itmay conce/m Be it known tha't I, LEwIs HOVER, of Chicago, in the county of Cook, and State of Illinois, have invented certain new and useful Improvements in Iron Doors, for decreasing danger from nre; and I do hereby deelare that the following is a full, clear, and exact description thereof, reference being had to the drawfollows in the same way. If one is opened, the other opens itself; .if closed, theother closes. Both doors lare fastened by the same bar. The bar passes through the wall, and is bent in such a manner that Vwhen one side is turned down on .the hasp or lug, the same operation is performed on the other side, and both doors are securely fastened.

A single iron door soon warps in a fire, and is at the best'but a poor protection; 'hence the value of this invention.

I will now proceed to explain the mode of construction, referenceV being had to the d rawings herewith, letters and gures herein denoting corresponding letters and figures thereon. v

Letter A represents the co'gs or mechanism connecting the two doors, by means of which the doors (one opening in each room) are made to'operate alike. Opening either door will open both, or shutting either one will shut both. The doors 'can be thrown clear back against the wall, out of the Way.

B B represent the iron doors. They are made 'in the usual form; only instead of one door to each passage-way, I use two, one on each side of the wall,

opening outward. The cogs A are attached to the hinges c, either upper or lower, lor both, .and au opening left in the Wall sufoiently large to enable the mechanism to work therein. A plate of sheet-metal orl cast-iron can be inserted in the wall over the oogs, as shown at H, in Figure 3, to keep the brick or stone from pressing on the oog. Y

D represents the bar or fastening, which passes through the wall, and bent as shown in Figure 2, which enables a person on either side to remove the fastening from both doors at the same time. The bar is turned upward until it strikes a stop placed in the wall at E, in Figure l, where it remains until the doors are closed, when it is thrown over, and falls in the lugF,

Iig. 3, fastening both doors. Fig..2 represents both doors closed, and securely fastened, and the cogs or mechanism plainly shown. The bar D Dis represented in the hasp or lug-FF, showing a perfectly secure (from fire) fastening.

j This invention can be applied to shutters for windows, as well as doors, and is not liable to get out of order.

Having described my invention, What I desire to secure by Letters Patent, is The combination of the-outer and inner doors, B B, and their cogged hinges A A, when secured by the double latch D, or its equivalent, all substantially as and for the purposes herein' shown and specified.

In testimony7 that I claim the foregoing, I have here-Y unto set my hand, this, the day OfMarch, 1868.

LEWIS HOVER. Witnesses:

WM. J. KING, HENRY HOOVER. l 

